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Melatonin Supports Photochemical Activity of Assimilation Apparatus and Delays Senescence of Leaves of Monocotyledonous Plants

  • BIOCHEMISTRY, BIOPHYSICS, AND MOLECULAR BIOLOGY
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Abstract

Melatonin supports the photochemical activity of photosystem II (PS II) and slows down the degradation of the main photosynthetic pigments during aging of leaves of monocotyledonous plants. The protective effect of melatonin is manifested in an increase in the maximum (Fv/Fm) and effective (Y(II)) quantum yield of PS II, in an increase of regulated (Y(NPQ)) and a decrease in unregulated dissipation of excitation energy (Y(NO)). These effects are based on the ability of melatonin to reduce the intensity of oxidative stress by maintaining a high level of carotenoids, which exhibit pronounced antioxidant properties, during aging.

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Funding

The study was supported by the Russian Foundation for Basic Research (project no. 19-34-90051).

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Authors and Affiliations

  1. National Research Tomsk State University, Tomsk, Russia

    E. D. Danilova, M. V. Efimova, L. V. Kolomeichuk &  V. V. Kuznetsov

  2. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia

    V. V. Kuznetsov

Authors
  1. E. D. Danilova
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  2. M. V. Efimova
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  3. L. V. Kolomeichuk
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  4. V. V. Kuznetsov
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Correspondence to E. D. Danilova.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Translated by M. Batrukova

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Danilova, E.D., Efimova, M.V., Kolomeichuk, L.V. et al. Melatonin Supports Photochemical Activity of Assimilation Apparatus and Delays Senescence of Leaves of Monocotyledonous Plants. Dokl Biochem Biophys 495, 271–275 (2020). https://doi.org/10.1134/S1607672920050051

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  • DOI: https://doi.org/10.1134/S1607672920050051

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